unwrap Method (SQLServerStatement)
Returns an object that implements the specified interface to allow access to the Microsoft SQL Server JDBC Driver-specific methods.
Note
This feature is introduced starting with the Microsoft SQL Server JDBC Driver version 2.0.
Syntax
public <T> T unwrap(Class<T> iface)
Parameters
iface
A class of type T defining an interface.
Return Value
An object that implements the specified interface.
Exceptions
Remarks
The unwrap method is defined by the java.sql.Wrapper interface, which is introduced in the JDBC 4.0 Spec.
Applications might need to access extensions to the JDBC API that are specific to the Microsoft SQL Server JDBC Driver. The unwrap method supports unwrapping to public classes that this object extends, if the classes expose vendor extensions.
When this method is called, the object unwraps to the SQLServerStatement class.
For example code, see Updating Large Data Sample, or unwrap Method (SQLServerCallableStatement).
For more information, see Wrappers and Interfaces.
See Also
Reference
isWrapperFor Method (SQLServerStatement)